The polystyrene board is a white object made of expandable polystyrene beads containing a volatile liquid foaming agent, which is pre-heated and heated in a mold. It has the str...
Dec 30, 2021
Solvent-based paints are coatings made with organic solvents as the dispersion medium. Although solvent-based coatings have problems such as environmental pollution, energy wast...
Rigid waterproofing
Dec 29, 2021
Flexible waterproofing
Radiation effect
Dec 28, 2021
Time-varying electromagnetic field
Permittivity
Dec 27, 2021
permanent electric body
Working principle of calendering
Dec 26, 2021
Calendering
Overhead lines
Dec 25, 2021
Aluminum conductor steel reinforced refers to a reinforced conductor in which single-layer or multi-layer aluminum strands are twisted outside the galvanized steel core wire. Ma...
